R 299.4921 Landfill construction; construction certification.

Rule 921. (1) The construction quality assurance officer shall certify that a landfill was constructed in accordance with the CQA plan, these rules, and engineering plans approved by the department. All of the following construction records shall accompany the certification of a new unit or the lateral extension of an existing unit: (a) A daily activity log, as specified in subrule (3) of this rule. (b) Records of any natural soil barrier, as specified in R 299.4912. (c) Compacted soil liner records, as specified in R 299.4917. (d) Flexible membrane liner records, as specified in R 299.4918. (e) Leachate collection system records, as specified in R 299.4919. (f) Final elevations, as documented on as-built plans specified in subrule (4) of this rule. (g) Diagrams that show the location of all tests on the liner and liner system. (2) The CQA officer shall certify that a landfill that has reached final grade, or has otherwise closed, has received final cover as specified in these rules, the CQA plan, and engineering plans approved by the department. All of the following construction records shall accompany an engineer's certification of a unit that has received final cover: (a) A daily activity log, as specified in subrule (3) of this rule. (b) Soil cover liner records, as specified in R 299.4917. (c) Flexible membrane cover liner records, as specified in R 299.4918. (d) Observations and tests of the other layers of the final cover to ensure that the design specifications are met. These activities shall include inspection of the completed cover slope, vegetation, and drainage conduits to ensure that they are in compliance with the specified design. (e) Final elevations, as documented on as-built plans specified in subrule (4) of this rule. (3) A daily activity log shall be completed by the on-site construction supervisor for each day of construction. A daily activity log shall include all of the following information: (a) The name and title of construction supervisor. (b) The date of activity. (c) Weather, including maximum and minimum temperatures and amount of precipitation, if any. (d) The type of activity conducted. (e) A summary of all quality assurance tests conducted, indicating which tests passed and failed specifications. (f) Documentation of all repairs made on the liner system. (4) The CQA officer shall prepare as-built plans to document all elevations of a newly constructed landfill and closed landfill. All elevations shall be referenced to United States geological survey datum. As-built plans shall indicate all of the following information: (a) The dimensions and maximum and minimum elevations of each cell in each direction. Elevations of each bottom liner component shall be within 0.2 feet of approved plans, if each component meets the minimum thickness requirements of these rules. (b) The location and elevation of all sumps and gravity pipelines. Elevations of sumps and pipelines shall be within 0.2 feet of approved plans. (c) The location and elevation of all drainage facilities. (d) The surface elevations of the final cover. The elevation of the final cover may deviate up to 1 foot above approved plans, if each component meets the minimum thickness requirements of these rules. (5) An engineer's certification under this rule shall be a statement or declaration that is based on his or her knowledge and review of the construction records that are specified in this rule. The engineer's certification of construction conditions shall not relieve the owner, operator, or any other party from meeting other applicable requirements of the act and these rules.